Nabikoáguna Antique. Fig. 1., Plate I. This article is generally found in the form of an exact circle, rarely, a little ovate. It has been ground down and re-polished, apparently, from the sea conch. Its diameter varies from three-fourths of an inch to two inches. Thickness, two-tenths in the centre, thinning out a little towards the edges. It is doubly perforated. It is figured on the face and its reverse, with two parallel latitudinal, and two longitudinal lines crossing in its centre, and dividing the area into four equal parts. Its circumference is marked with an inner circle, corresponding in width to the cardinal parallels. Each division of the circle thus quartered, has five circles with a central dot. The latitudinal and longitudinal bands or fillets, have each four similar circles and dots, and one in its centre, making thirty-seven. The number of these circles varies, however, on various specimens. In the one figured, they are fifty-two. The partial decomposition of the surface renders exactitude in this particular sometimes impossible. This article was first detected, many years ago, in a medal, one and a half inches diameter, found in an ancient grave on the Scioto, in Ohio, and was supposed to be a kind of altered enamel or earthen ware. The structure of the shell is, however, present in all cases, in its centre. Its occurrence, the present year, in the ancient fort grounds and cemeteries of Onondaga, identifies the epochs of the ancient Indian settlements of Ohio and western New-York, and furnishes a hint of the value of these investigations. A medium specimen was examined, in the possession of I. Keeler, jr., Jamesville, very much obliterated; another, of the minimum size, at James Gould’s, Lafayette. The largest specimen seen, is one sent by I. V. V. Clarke, from Pompey and Manlius. The Indians have no traditions of the wearing of this species of shell medal, so far as known. It must be referred to the era preceding the discovery. Nabikoáguna Iroquois. Fig. 2, annexed. This article consists of a metal, which is apparently an alloy. It is slightly ovate, and is perforated in the rim, so as to have been hung transversely. Its greatest diameter is two and four-tenth inches. There are no traces of European art about it, unless the apparent alloy be such. Locality, valley of Genesee river. [Illustration: AMERICAN ANTIQUITIES—Plate II.] Nabikoáguna Cameo, Fig. 3, 4. Plate III. This well sculptured article, was discovered in the valley of the Kasonda creek, Onondaga county. The material is a compact piece of sea shell. It still possesses, in a considerable degree, the smoothness and lustre of its original finish. Fig. 4 shews the prominence of the features in profile. At the angles of the temples are two small orifices, for suspending it around the neck. The entire article is finished with much skill and delicacy. [Mifflin Gould.] [Illustration: AMERICAN ANTIQUITIES—Plate III.]